EP 3712663 A1 20200923 - WAVELENGTH CONVERSION ELEMENT
Title (en)
WAVELENGTH CONVERSION ELEMENT
Title (de)
WELLENLÄNGENUMWANDLUNGSELEMENT
Title (fr)
ÉLÉMENT DE CONVERSION DE LONGUEUR D'ONDE
Publication
Application
Priority
- JP 2017221095 A 20171116
- JP 2018040818 W 20181102
Abstract (en)
A wavelength converter (1) includes: a substrate portion (10); and an optical conversion layer (30) including optical conversion inorganic particles (40) and an inorganic binder portion (50), wherein the inorganic binder portion (50) includes: an amorphous binder (52); and granular binder particulates (51) with an average particle size smaller than an average particle size of the optical conversion inorganic particles (40), and when a ratio of an average volume concentration of the binder particulates (51) in the substrate-side portion (31) with respect to an average volume concentration of the optical conversion inorganic particles (40) in the substrate-side portion (31) is defined as a substrate-side binder particulate concentration ratio RFs and, when a ratio of an average volume concentration of the binder particulates (51) in the non-substrate-side portion (32) with respect to an average volume concentration of the optical conversion inorganic particles (40) in the non-substrate-side portion (32) is defined as a non-substrate-side binder particulate concentration ratio RF<sub>o</sub>, the substrate-side binder particulate concentration ratio RFs is larger than the non-substrate-side binder particulate concentration ratio RF<sub>o</sub>.
IPC 8 full level
G02B 5/20 (2006.01); C09K 11/08 (2006.01)
CPC (source: EP US)
C03C 17/007 (2013.01 - EP); C03C 17/009 (2013.01 - EP); C09K 11/02 (2013.01 - EP); C09K 11/7706 (2013.01 - EP); G02B 5/206 (2013.01 - EP); H01L 33/502 (2013.01 - US); C03C 2217/452 (2013.01 - EP); C03C 2217/48 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3712663 A1 20200923; EP 3712663 A4 20210217; EP 3712663 B1 20230920; CN 111656228 A 20200911; CN 111656228 B 20220715; JP 6872735 B2 20210519; JP WO2019098057 A1 20210114; US 2021175394 A1 20210610; WO 2019098057 A1 20190523
DOCDB simple family (application)
EP 18878095 A 20181102; CN 201880073650 A 20181102; JP 2018040818 W 20181102; JP 2019554162 A 20181102; US 201816763869 A 20181102